Relationships among attachment styles, conflict styles and humour styles were examined in the context of romantic relationships. Each style was assumed to be based upon underlying assumptions about self and others, so relationships among the measures were predicted. A model assuming that the relationship of attachment styles to relationship satisfaction was partially mediated by the conflict styles and humour styles was tested. Overall, the predicted relationships among the three measures were supported. Conflict styles and humour styles reflecting attitudes about others were related to the avoidance attachment style, while those reflecting attitudes about the self were related to the anxiety attachment dimension. Conflict styles and humour styles were mediators of the association of attachment style with relationship satisfaction. Copyright © 2007 John Wiley & Sons, Ltd.